Home / 1,357.12-2,035.68-383.22

Finding the Fourth Proportional to 1,357.12, 2,035.68 and 383.22

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Solution

The fourth proportional to 1,357.12, 2,035.68 and 383.22 is: 574.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.12 : 2,035.68 = 383.22 : x
  2. Step 2: Convert to fraction form
    1,357.12/2,035.68 = 383.22/x
  3. Step 3: Cross multiply
    1,357.12x = 2,035.68 × 383.22
  4. Step 4: Simplify right side
    1,357.12x = 780,113.29
  5. Step 5: Solve for x
    x = 780,113.29/1,357.12
  6. Step 6: Final answer
    x = 574.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.